static inline void hlt(void)
{
- if (hlt_counter)
- return;
-
__asm__ __volatile__ ("sleep" : : : "memory");
}
/*
* The idle loop on a uniprocessor SH..
*/
-void default_idle(void)
+void cpu_idle(void)
{
/* endless idle loop with no priority at all */
while (1) {
if (hlt_counter) {
- while (1)
- if (need_resched())
- break;
+ while (!need_resched())
+ cpu_relax();
} else {
local_irq_disable();
while (!need_resched()) {
}
local_irq_enable();
}
+ preempt_enable_no_resched();
schedule();
+ preempt_disable();
}
-}
-void cpu_idle(void)
-{
- default_idle();
}
void machine_restart(char * __unused)
}
#endif
/* Copy from sh version */
- childregs = ((struct pt_regs *)(THREAD_SIZE + (unsigned long) p->thread_info )) - 1;
+ childregs = (struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1;
*childregs = *regs;
childregs->regs[15] = usp;
p->thread.uregs = childregs;
} else {
- childregs->regs[15] = (unsigned long)p->thread_info + THREAD_SIZE;
+ childregs->regs[15] = (unsigned long)task_stack_page(p) + THREAD_SIZE;
}
childregs->regs[9] = 0; /* Set return value for child */
return 0;
}
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
- dump->magic = CMAGIC;
- dump->start_code = current->mm->start_code;
- dump->start_data = current->mm->start_data;
- dump->start_stack = regs->regs[15] & ~(PAGE_SIZE - 1);
- dump->u_tsize = (current->mm->end_code - dump->start_code) >> PAGE_SHIFT;
- dump->u_dsize = (current->mm->brk + (PAGE_SIZE-1) - dump->start_data) >> PAGE_SHIFT;
- dump->u_ssize = (current->mm->start_stack - dump->start_stack +
- PAGE_SIZE - 1) >> PAGE_SHIFT;
- /* Debug registers will come here. */
-
- dump->regs = *regs;
-
- dump->u_fpvalid = dump_fpu(regs, &dump->fpu);
-}
-
asmlinkage int sys_fork(unsigned long r2, unsigned long r3,
unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7,